Apparatus for impregnating or staining wood.



No MODEL.

APPARATUS? PATENTED JULY 28, 1903.l

lllllllllllllllmlI 1 ite. 735,019.

p UNITED- STATESI atented July A28, IQ'O.

PATENT OFFICE.

`JOSEF PFISTER, OF VIENNA, AUSTRIA-HUNGARY.

SPECIFICATION forming part of Letters Patent No. 735,019, dated July 28, 1903.

Application iiled August 5, l1902. Serial No. 118,426. (No mode1.\.

11, Austria-Hungary, have invented certain new and useful Improvements in Apparatus for Impregnating or Staining Wood, of which f the following is a specification.

Different systems have been hitherto used for impregnating and staining wood by forcing the dyeing liquid under pressure into the wood. There are also apparatuses where the wood is closed with its front face in a receptacle, and the im pregnatiug orstaining liquid is pressed in at this end. Such apparatuses are, however, more or less expensive. Their handling and the obtaining of a'tight closing of the wood piece introduced therein is connected with great trouble and difficulties; besides, their bulky size making them diiiicult to be moved from one place to another they are of no usein forests or wood-cutting places.

The present invention relates to an apparatus for impregnating and staining wood where the receptacle containing the impregnating or staining liquid is provided with an .elastic neck reaching into the interior of the q In the opening of this neck the receptacle. wood under treatment is introduced, and as soon as the liquid in the receptacle undergoes a pressure a tight closing of the neck around the wood is effected by the liquid under pressure.

In the accompanying drawings, Figure l shows the apparatus in a standing position; Fig. 2, the same in horizontal position. Fig.

- 3 is a top view of Fig. l, and Figs.4 and 5 .material-such as indiarubber, leather, or

the like-having a pendulous portion c',reacl1 ing into the interior of the receptacle, and is firmly gripped at its edge c2 between the iiange of the receptacle and a plate f, fastened to the iiange. v v

The elastic neck c forms an opening which, according to the Wood under treatment, may be round, square, or long. The wood to be impregnated or stained is passed with its one end through this opening-way into the interior of the receptacle b, whereby only a. rough hewing of the Wood with an ax or a saw is required. I

Through a pressure by a pump on the liquid introduced into the receptacle and surrounding the end of the wood piece the free or pendulous part c of the necktightens itself close to the wood, and the higher the pressureA on the liquor the tighter the pendulous part of the neck closes around the wood, so as to completely calk it. The liquid is then forced under pressure into the channels or pores of the wood, impreguating it up to its other end. For correctly adjusting the wood piece toward the opening of the neck screws g, Fig.` 2, may be used.

The height or length of the receptacle depends entirely upon the nature of the wood to be impregnated or stained. Sound pieces without flaws need only ashort di pping,while for fiawy and knotty ones correspondinglylonger receptacles` are required.

As seen from Figs. 4 andb 5, a number of the above-described receptacles may be joined to one pressure-pipe h, enabling thus to enlarge a plant to any desired workingcapacity'. For this purpose dierent sizes of those forms mostly to be used are kept on stock and introduced in the receptacle just as they are required.

The staining and impregnating of wood with the above-described apparatus is done much easier and simpler than with any hitherto-known apparatus, and it may be worked at any place without difficulty.

The course of the process may be followed to the end, and besides by the liquid press- IOO . claim as new, and desire to secure by Letters Patent, is-

n an apparatus of the character described, a receptacle into one end of which the iinpregnating liquid is forced under pressure, a plate having an opening closing the oppositeend of said receptacle, a neck having a pendulous portion extending into the receptacle,

said neck having an opening corresponding to the opening in the plate, and means for removably clamping the edge of said neck between the plate and receptacle, all arranged so that when the log to b'e treated enters the receptacle through the opening in the plate and neck; the pendulous portion of the neck is clamped to the log by the pressure of liquid in the receptacle.

InV testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

I Witnesses:

JOSEF PFISTER. 

